Year % 2001 1.55642 2002 23.7931 2004 28.18428 2005 22.22222 2006 27.33645 2007 35.06849 2008 30.89888 2009 27.01005 2010 23.60061 2011 35.28302 2012 24.88038 2013 7.283464 2014 8.63109 2015 11.83652 2016 7.829182 2017 5.042919 2018 3.873431 2019 15.73631 2020 15.77279 2021 15.1909